package com.huaxinkaiye.utils;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import Decoder.BASE64Decoder;
import Decoder.BASE64Encoder;


public class ImageUtil64Code {

	/**
	 * 将图片文件转化为字节数组字符串，并对其进行Base64编码处理
	 * @param imgFile
	 */
	public static String GetImageStr(String imgFile) {
		InputStream in = null;
		byte[] data = null;
		// 读取图片字节数组
		try {
			in = new FileInputStream(imgFile);
			data = new byte[in.available()];
			in.read(data);
			in.close();
		} catch (IOException e) {
		}
		// 对字节数组Base64编码
		BASE64Encoder encoder = new BASE64Encoder();
		return encoder.encode(data);// 返回Base64编码过的字节数组字符串
	}

	/**
	 * 对字节数组字符串进行Base64解码并生成图片
	 * 
	 * @param imgStr
	 * @param imgFilePath
	 * @return
	 * @throws IOException 
	 */
	public static void GenerateImage(String imgStr, String imgFilePath) {
		BASE64Decoder decoder = new BASE64Decoder();
		OutputStream out = null;
        try 
        {
            //Base64解码
            byte[] b = decoder.decodeBuffer(imgStr);
            for(int i=0;i<b.length;++i)
            {
                if(b[i]<0)
                {//调整异常数据
                    b[i]+=256;
                }
            }
           
            out = new FileOutputStream(imgFilePath);    
            out.write(b);
            out.flush();
            out.close();
        } 
        catch (Exception e) 
        {
        	e.getStackTrace();
			e.getMessage();
        }
        finally
        {
        	if(out!=null)
        	{
				try {
					out.close();
				} catch (IOException e) {
				}
        	}
        }

	
	}
}
